{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Chris Hobza", "hasEmail": "mailto:cmhobza@usgs.gov"}, "description": "The U.S. Geological Survey and its partners have collaborated to complete airborne geophysical surveys for \nareas of the North and South Platte River valleys and Lodgepole Creek in western Nebraska. The objective \nof the surveys was to map the aquifers and bedrock topography of selected areas to help improve the \nunderstanding of groundwater-surface-water relationships to be used in water management decisions. \nFrequency-domain (2008 and 2009) and time-domain (2010) helicopter electromagnetic surveys were \ncompleted, using a unique survey flight line design, to collect resistivity data that can be related to lithologic \ninformation for refinement of groundwater model inputs.  To make the geophysical data useful to \nmultidimensional groundwater models, numerical inversion is necessary to convert the measured data \ninto a depth-dependent subsurface resistivity model.  This inversion model, in conjunction with sensitivity \nanalysis, geological ground truth (boreholes), and geological interpretation, is used to characterize \nhydrogeologic features.  The two- and three- dimensional interpretation provides the groundwater \nmodeler with a high-resolution hydrogeologic framework and a quantitative estimate of framework \nuncertainty.  This method of creating hydrogeologic frameworks improved the understanding of the \nactual flow path orientation by redefining the location of the paleochannels and associated bedrock \nhighs. The improved models represent the hydrogeology at a level of accuracy not achievable using \nprevious data sets.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9OU1VLZ", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.0dba6e6c-f07d-4152-8c27-927b0fde5013.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_0dba6e6c-f07d-4152-8c27-927b0fde5013", "keyword": ["Nebraska", "Ogallala", "Scottsbluff", "Sidney", "USGS:0dba6e6c-f07d-4152-8c27-927b0fde5013", "environment", "geoscientificInformation", "imageryBaseMapsEarthCover", "inlandWaters"], "modified": "2020-11-17T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-104.2, 41.39, -102.5, 42.27", "theme": ["geospatial"], "title": "Base of aquifer contour boundary of the principal aquifer for portions of the North Platte, South Platte, and Twin Platte Natural Resources Districts, western Nebraska"}